<template>
  <div class="List">
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <!-- 搜索商品 -->
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <!-- 添加商品 -->
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- 商品表格 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name" width="610"></el-table-column>
        <el-table-column label="商品名称（元）" prop="goods_price" width="115"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="95"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="160">
          <template v-slot="scope">
            <!-- 时间戳转yyyy-MM-dd HH:mm:ss-->
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="230">
          <template v-slot="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeGoodsById(scope.row.goods_id)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 -->
      <div class="page">
        <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total"> </el-pagination>
      </div>
    </el-card>
  </div>
</template>

<script>
export default {
  name: "List",
  data() {
    return {
      // 获取用户列表的请求参数对象
      queryInfo: {
        query: "",
        pagenum: 1,
        pagesize: 10,
      },
      // 商品列表
      goodsList: [],
      // 商品总数
      total: 0,
    };
  },
  created() {
    // 获取商品列表
    this.getGoodsList();
  },
  methods: {
    async getGoodsList() {
      const { data: res } = await this.$request("goods", {
        params: this.queryInfo,
      });
      if (res.meta.status != 200) return this.$message.error("服务器错误，获取商品列表失败");
      // 保存相关数据
      this.goodsList = res.data.goods;
      this.total = res.data.total;
    },
    // 监听 pagesize 改变，重新发起请求
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getGoodsList();
    },
    // 监听 pagenum改变的事件，重新发起请求
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getGoodsList();
    },
    // 点击按钮删除商品
    async removeGoodsById(id) {
      const reslut = await this.$confirm("此操作将永久删除该商品, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).catch((err) => err);
      if (reslut !== "confirm") return this.$message.info("已取消删除");
      const { data: res } = await this.$request.delete(`goods/${id}`);
      if (res.meta.status !== 200) return this.$message.error("服务器错误，删除失败");
      this.$message.success("删除成功");
      this.getGoodsList();
    },

    // 点击添加按钮，添加商品
    goAddPage() {
      this.$router.push("/goods/add");
    },
  },
};
</script>

<style lang="less" scoped>
.List {
}
</style>
